Home / 916,641.63-1,264,946.40-508,719.78

Finding the Fourth Proportional to 916,641.63, 1,264,946.40 and 508,719.78

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Solution

The fourth proportional to 916,641.63, 1,264,946.40 and 508,719.78 is: 702,022.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,641.63 : 1,264,946.40 = 508,719.78 : x
  2. Step 2: Convert to fraction form
    916,641.63/1,264,946.40 = 508,719.78/x
  3. Step 3: Cross multiply
    916,641.63x = 1,264,946.40 × 508,719.78
  4. Step 4: Simplify right side
    916,641.63x = 643,503,254,319.79
  5. Step 5: Solve for x
    x = 643,503,254,319.79/916,641.63
  6. Step 6: Final answer
    x = 702,022.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.